Hydraulic output drive shaft generator

Abstract

The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics. The radial piston pump is arranged on the axis of the output drive shaft of the drive set, between the drive set and a gearbox which is connected thereto via the output drive shaft. The drive set, the radial piston pump and the gearbox in this case form a compact drive unit.

We claim: 
     
       1. Mobile machine having a traction drive and working hydraulics ( 22 ), which machine has a radial piston pump ( 20 ) which is driven by a drive set ( 10 ), supplies the working hydraulics ( 22 ) and is arranged on the axis of the output drive shaft ( 12 ) of the drive set ( 10 ), between the drive set ( 10 ) and a gearbox ( 30 ) which is connected thereto via the output drive shaft ( 12 ), and the drive set ( 10 ), the radial piston pump ( 20 ) and the gearbox ( 30 ) form a compact drive unit ( 40 );
 wherein the working hydraulics ( 22 ) have hydraulic actuators which can separately or jointly be supplied with hydraulic energy, selectively, individually, or at the same time from the radial piston pump ( 20 ) or a hydraulic accumulator ( 28 ) connected to the radial piston pump ( 20 ) such that the hydraulic accumulator ( 29 ) can be filled by the radial piston pump ( 20 ). 
 
     
     
       2. Mobile machine according to  claim 1 , characterized in that the drive set ( 10 ) is in the form of an internal combustion engine. 
     
     
       3. Mobile machine according to  claim 2 , characterized in that the radial piston pump ( 20 ) is fitted to the flywheel housing ( 14 ) of the internal combustion engine ( 10 ). 
     
     
       4. Mobile machine according to  claim 1 , characterized in that the power of the drive set ( 10 ) can be passed to a gearbox ( 30 ) via the output drive shaft of the radial piston pump ( 20 ). 
     
     
       5. Mobile machine according to  claim 1 , characterized in that the hydraulic accumulator ( 28 ) emits hydraulic energy to the radial piston pump ( 20 ) when the radial piston pump ( 20 ) is being operated as a motor. 
     
     
       6. Mobile machine according to  claim 1 , characterized in that the gearbox ( 30 ) has a traction drive pump ( 52 ), with the traction drive pump ( 52 ) being arranged on the axis of the output drive shaft ( 12 ). 
     
     
       7. Mobile machine according to  claim 6 , characterized in that the traction drive pump ( 52 ) is in the form of an adjustable axial piston pump. 
     
     
       8. Mobile machine according to  claim 1 , characterized in that the radial piston pump ( 20 ) is a radial piston pump which can be admitted from the outside and has tilting pistons.